Okey, found the solution, here:
Changing module “Type” did nothing in my case.
I merged the two modules back to only one and used the following condition in [plugin].Build.cs
:
if (Target.bBuildEditor)
{
PublicDependencyModuleNames.AddRange(new string[]{"UnrealEd",});
}
I also had to wrap every header that comes from “UnrealEd” with #if WITH_EDITOR
My project finally compiles to Shipping